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Automatic Remote Disable of Processor using SMI

Publishing Venue

IBM

Abstract

A local SP in an SMP server monitors environmental and CPU PFA events. When an event occurs indicating a CPU is going to fail, the local SP informs a remote management server (or SP) which may authenticate & validate the need for the CPU to be taken offline. If so, the remote management server/SP responds to the local SP requesting an appropriate SMI in BIOS be invoked. In the SMI, BIOS transfers thread tasks running atop the faulting CPU to an available CPU, & brings down the faulting CPU to a stand-by or powered-off state. With BIOS handshaking to the local SP, a notice of the avoided fault may be sent back to the remote management server/SP.
Several advantages to this technique: 1. A wider mapping of PFA & other system-wide information may be used to identify the CPU is about to fail (ie, thermal core overtempurature). 2. A policy on the remote system may be used to 2.1 analyze the reason the CPU appears to be faulting, to validate the request to take that CPU offline 2.2 allow a customer a choice in using this automatic fault-avoidance technique

Country

Undisclosed

Language

English (United States)

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Automatic Remote Disable of Processor using SMI

Remote Management Server or Service Processor

CPU

CPU

CPU

CPU

Management SP

Network

A flow of events may proceed as follows:

1

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Local SP detects CPU PFA or other critically suspect event

Local SP alerts remote management with some detail of event to request CPU shutdown authorization